The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2022
Filed:
Apr. 24, 2020
China University of Mining and Technology, Beijing, Beijing, CN;
CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING, Beijing, CN;
Abstract
An experimental method and system for simulating the evolution of reservoir fracture stress field, the experimental method comprises the following steps: (S) preparing horizontal well fracturing model (); (S) applying boundary loads and constraints to the horizontal well fracturing model (); (S) injecting fracturing fluid or fracturing gas into a fracturing wellbore () of the horizontal well fracturing model () after loading for fracturing; in a fracturing stage, a photoelastic fringe image of the horizontal well fracturing model () is obtained by an optical phase shift method; the fracturing stage comprises an initial state before fracturing fluid or fracturing gas is injected and an end state after fracturing is completed. The experimental method and system can effectively simulate the whole process of horizontal well fracturing, and accurately obtain the variation law of reservoir stress field and its influence on crack propagation during horizontal well fracturing.